1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/signatures.py b/synapse/storage/signatures.py
index ea6823f18d..e1dca927d7 100644
--- a/synapse/storage/signatures.py
+++ b/synapse/storage/signatures.py
@@ -25,7 +25,7 @@ from synapse.util.caches.descriptors import cached, cachedList
 class SignatureStore(SQLBaseStore):
     """Persistence for event signatures and hashes"""
 
-    @cached(lru=True)
+    @cached()
     def get_event_reference_hash(self, event_id):
         return self._get_event_reference_hashes_txn(event_id)